Gas burner



May 2, 1933.

A. W. MORSE GAS BURNER Filed April 28, 1931 Patented May 2, 1933 j UNITED STATES PATE ALBERT W. MORSE, F FOREST-3111's, VXORK GAS :BURNER Application med Aprn as,

This invention relates to gas burners or similar structures using a primary air supply either forced or induced and it is the particular object to provide such structures with means which regulate the amount of air and gas admitted in certain predetermined proportions to each other during a unit movement of an operating lever or the like. That is, the Yinvention resides in providing means whereby a fixed proportion be-A tween air and gas supply can be established and an operating lever or screw can be moved a'fixed distance while the'gas and air supply can be adjusted to desired proportions independent of the xed travel of the said lever or screw. j

Other objects will become apparent in the accompanying drawing and the following specification in whichv a preferred form of theinvention is described.

In the drawing, Fig. 1 is a vertical longitudinal sectional view through a gas burner embodying the principles of the invention;

Fig. 2 is a cross sectional view along the '25 plane of line 2 2 in Fig. 1;

Fig.. 2 is a fragmentary horizontal sectional view along the plane of line 3 3 in Fig. 2; and J j Fig. 4 is a fragmentary elevational view of part of the operating mechanisms of the burner.

Like characters of reference denote similarY parts throughout the several views and the following specification. j

1() isa hollow burner casing, substantially L shaped, having its longer branch- 11 threaded at 12 to receive an air adjusting cap 13 having a central outlet 14. The shorter branch 15 is threaded interiorly for an air supply pipe 16. Adjacent branch 15 and in alignment with the center of `the branch 11 and outlet 14 of the adjusting cap 13 the casing is threaded to .receive a substantially tubular supplemental casing 17. 18 is a bridge in its center having a re.

stricte'd opening 19 provided with'a valve seat 20. 21 is an inwardly extending tubular portion of thesupplemental casing 17 in alignment with branch 11 vof the casing 10. Its open end is somewhat reduced in dithreaded to lreceive threaded end of operating rod 25.v Shaft 32 1931. serial No. 533,4()7. .1

ameter to receive slidingly a gas nozzle 22 of substantially cup shape. The extreme outer wall of the gas nozzle 22v is perforated with a plurality ofropenings or gas outlets 23. Its open. end which "slides within the tubular extensionv 21 is provided with a cross web 24 tapped to suit an operating rod 25 disposed-in axial alignment with extension 217 gas nozzle 22- and cap 13. 26 is a gas chamber Vwithin the supplemental casing-17 where the same projects beyond `the` casing 10, having at one sidea gas supply led to it by a pipe 27. 28 is a gas valve disc adapted to seat against valve seat 20. This disc is f bored out centrally to permit the passage therethrough of operating rod 25 and is threaded opposite its portion engaging. seat 20 to receive a tubular member 29 `which* projects outwardly of the supplemental casing 17 through a packing gland 30 engaging a stufling box bonnet 31 in alignment with the member 29 and valve disc 28. 32 .is a round shaftvslidinglyengaging the inside of tubular member 29 and'having itsinner end a` correspondingly projects outwardly of tubular meinber- 29 and is threaded at its ,extreme end to receive a link 33; 34 is a packing-nut screwed ontov y the extreme outer endl of member 29 surrounding shaft 32. 35 is a bracket extending outwardly from supplemental casing 17 adjacent its gas connection. Bracket 35 is bent upwardly at its extremeend at 36 in tubular shape to receive a fulcrum pin 37.

38 is a substantially U-shaped lever straddling both sides of end 36 of bracket 3 5 Vand is vfulcrumed on pin 37 1 39 is a handle piece fastened to lever. 3S. Lever 38 has ateach side outwardly extending lugs 40 and. y41 spaced, respectively. above :and below the fulcrum pin 37 VThese pairs of lugs are bored `fout to receive each a Vscrew 42 disposed parallel to thelever 38, having va head 43 below the lower lug 41 and a square 44'V for manipulating with aV wrenchat itstop fand a lock nut 45 above the upper lug 40 toy hold the screw in a fixed position.

' 46Y is aA substantially square block in,y threaded engagement with one of the screws 42 and disposed between the lugs 40 and 41, its wide surface adjacent the lever preventing a turning movement when screw 42 is rotated about its axis which thus forces the block up and down when the screw is turned. 47 is a pin projecting outwardly from the block 46 away from the lever. 48 is a lever link connecting the pin 47 with a similar pin 48a forming part oi' the link 33.

49 is a square block similar to block 46 and similarly disposed upon screw 42 at the other side of the lever 38, having also a pin 5() projecting therefrom. 51 is a threaded sleeve screwed onto the outwardly projecting end of tubular member 29 adj acentV the pacl ing nut 34. Sleeve 51 is provided with a pin 52. A lever link 53 connects pins 150 and`52. j f

The operation of the burner is as follows: Gas is admitted through pipe 27, past the valve disc 28, valve opening 20,' through perforations 23 of the gas nozzle 22, to mix with air conveyed to the casing 10 through pipe 16, the resultant mixture being discharged through outlet 14 ofthe adjusting cap 13.

By screwing down the block 46 from a position just below the upper lug to a position in line with the fulcrum pin 37, the opening ofY the air valve, or rather the amount of airpassed around the gas nozzle 22 can be adjusted from maximum to minimum. It' can readily be `notedthatkwith the block 46 in its top position, when the lever 38 is -moved from a closed position to the open position, the link 48 and consequently the shaft 32, rod 25 `and the nozzle 22 has its longest travel, while'k when the blockisscrewed down yto be in alignment with fulcrum pin 37, thererwirll'be no movement` at all of the link 48 and therefore no i movement of the nozzle 22.

Similarly, Vwhen the block 49'is in itsftop position, the lever link 53, the threaded sleeve 51, tubular member 29-and the valve disc 28 has the longest travel, `giving the 1 largest'gas opening, while with the block 49 screwed down Ato align withpin 37 there will be-no movementof the disc 28at all.

It is obvious, therefore, that with a unit movement of the lever 38, that is at --a fixed full, stroke, various adjustments of gas and air ycan be had byv screwing down more or lessblocks 46er 49ftowards theV center of the fulcrum Vpin 37. This makes possible the cross-connecting of a battery of burners byV Pconnecting all` levers of the burners to a motor driven automatic control or for other purposes.` This can easily be achieved be cause each burner orA each set ofburners ,can still be adjusted to minimum aswell as maXimum ilame conditions,but with a maximum (constant) stroke of the lever.

It can thus clearlybe seen that eithei-the air adjusting valve or Vgas nozzle 22 a the i outlet end of the burner or the gas adjusting valve disc 28 can be regulated from zero up to maximum opening by adjusting the position of the blocks 46 and 49. That is by screwing down the blocks to the zero point, the lever can be moved through (maximum movement) and the valves not be disturbedin any way. This results in the greatest possible flexibility :for operation with iigh air and low gas pressures or vice versa.

vIn making installations with burners of the kind described herein, it is not necessary to change the air pressure or gas pressure in order to use the burner, because even with an air pressure of pounds and a gas pressure of a few ounces, or a gas pressure ot' 100 pounds and an air pressure of a few ounces, vthe burner ywould still vpossessy the flexibilityneeded with the lmoveme'nt'of one lever and obtain proportional adjustment at all ranges of its normal regulation.

ently regulatable air adjusting clap 13. This is a vital construct-ion detail because it perf mits .small variations in theassembly of the'. complete unit.A Obviously,'it' would be almostk impossible to assemble the structure so that'the gas valve discv28 and the gas nozzle 22 seat both vtightly at the same time.' VVith'the hand adjusted cap 13, against which the nozzle 22 seats, the capcan be sc'rewed'up tightly against the nozzleA when the disc 28 is closed, thus making a valve seat atbothv points. 'Furthermore in some installations an oxidizingfflame may be desired: at all points 'of regulation, in which case the air adjusting ca'p canbe .screwed off until this condition' is obtained. Then there may also be some cases wherean oxidizing flame is required at very low temperatures as is the case in some drying.

processes, while a neutral llame is desired at higher points of regulationsuch asin baking processes. The cap can also be screwed olf the nozzle toobtain this condition Yand they air Y'operating link-48 adjusted so that i VhileI have shown they and gas con:-`

veyed through pipes tojthe burner ,casing by means of connections and have so--designated the respective inlets in the appended claims, the term connections is to berinterk-fy preted broadly'and may cover'plainopen, 130

ings only in case or-atmospheric air, Y j

izo

Vhat Iclaim as new, is;v v, l. A gas burner comprismg a structure having gas and air connections, gas and air valves, operating means for the said'valv'e's,

, and means to obtain variable ranges of adjustment for the said valves ink predetermined' proportions .to each other from zero to maximum with a constant travel of the said operating means.

2. Agas burner comprising a structure having gas and air connections, a gas and 4an air valve in alignment Withreach other,

openings of the said valves independently of and in predetermined proportions to each other from zero to maximum during a constant travel of the said lever.

4. A gas burnerl comprising a main casing having` an air connection, aV supplemental casing having a gas connection fastened to and projecting into the said main casing, gas and air valves in alignment with each other, a lever fulcrumed to the said casing adapted to operate the said valves, and adjusting means for varying the openings of the said valves independently of and in predetermined proportions to each other from zero to maximum.

5. A gas burner comprising a main casing having an air connection, a supplemental casing having a gas connection fastened to Y and projecting into the said main casing, gas and air valves in alignment with each other, a lever fulcrumed to the said casing adapted to operate the said valves, and adjusting means for varying the openings ofV the said valves independently of and in predetermined proportions to each other from fiero to maximum during a fixed travel ofk the said lever.

6. A gas burner comprising a main casing having an air connection, and an ad` justable air cap at the outlet end of the main casing, a supplemental casing having a gas connection fastened to and projecting into the said main casing, gas and air valves in alignment With each other and the said air cap, va lever fulcrumed to the said supplemental casing adapted to operate the said valves, and adjusting means for varying the openings of the said valves independent-ly of and in predetermined proportions to each other from zero to maximum during a unit movement oi the said lever.

7. A gas burner comprising a main casing having an air connection and an adjustable air cap -at its outlet end, a supplemental casing fastenedto the said main casing having a gas connection, a gasv valve anda gas nozzle in alignment with yeach'iotherA vthe said gas nozzle being adaptedto lcutoii vthe discharge otair from the said cap,l a lever ulcrumed to the said supplemental casing, and adjustable means connecting the valve andthe said nozzle to the saidv lever independently of each other for varying the opening of the said valve andthe discharge of air from the said capv in predetermined proportions from zero to maximum.

8. A- gas burner comprising a main casing having an air connection andan adjustable airk cap at v'its outlet end, a supplemental casing fastened to the said main casing having a gas connection, a gas valve and a gas nozzle in alignment With each other, the

said gas nozzle being adapted to cut oii' the 5 discharge of air from thel said cap, a lever fulcrumed to the said supplementalcasing, and adjustable means connectingy the said valve and the said nozzle to the said lever independently of each other` for varying theV opening Aof ythe said valve and the Vdischarge of air from the. said cap in predetermined proportions from'zero to maximum during a'iixed movement of thei said lever;

9, A gas burner comprisingA a. :structure having gas and air connect1ons,f'a gas valve.

anda gas nozzlev in. alignment with each other, a tube carrying the said valve, and-a spindle adapted to yreciprocate Withinthe said tube'carrying the said nozzle, Van operthe said :tube andthe said spindle to-fthe said lever independently of VYeach othenior varying the movement of the saidvvalve and nozzle in predetermined proportions to Teach other from zero to maximum.

l0. A Vgas burner comprisingv a structure having Agas and air connections, afgas valve and a. gas. nozzle in alignment'vvith each other, a tube carrying the said valve, and a spindle adaptedk to reciprocate Within the said tube carryingthesaid nozzle, an operating lever, and means adjustably connecting the said tube and the said spindle toV the said,lever-independently of eachother for varying the movement of the saidvalve and nozzle in predetermined proportions to each other from zero to.V maximum during ixed travels of ,the said lever. Y,

y11. A'gas burner comprising amain casing having an air connection and an adjust. able air cap at its outlet end, a supplemental casing fastenedto the said main casing having a gas connection, a gas valve and a gas nozzle4 in alignment With each other, a ytube carrying lthe said valve, and a spindleY adapted to reciprocate Within-the said .tube

sieA

ating llever, and means adjustably connecting :andthe said spindle to the said leverindependently ofzeach. other, lfor: varyingY the vmovement of' theL saidvalve and -nozzle in predetermined relations toeach other from ,and carrying they sai-dfnozzle, a lever fulcrumed to the said supplemental casing, and nieans'adj'ustably rconnecting the'said tube and the said spindle-to the said lever indemovement of thesaid valve and nozzle -in predetermined relationsfto eachother from l l 'zero to Ymaximum duri-ng` a 'fixed travel of the said lever. v

13.- A gas burner coinprisingl'a' main cas'- ating lever, a linkl connecting the said tube and lever, another link connecting thesaid Vspindle and lever, and means for adjusting the positions of the said links independently of each other from substantially parallel to 4the said tube and spindle to ones in angular relationv to a plane passing therethrough for the purpose oivarying the travel of the said spindle and tube, respectively, from zero to maximum during the inovementof the sald lever-. A

f In testimony whereof I have hereunto set my hand. p

' l ALBERT W. MORSE.

ing having'an airconnection and an admental casingfastened to the said main casjustable air cap'. at its outlet end, -a suppleinghaving .agas connection, a gas valve and a gas nozzle in alignment With-each other,v a tubeoarrying the said valve, and a' spindle adapted to reciprocate Within the vsaid tube carrying the said nozzle, l the? said nozzle b'eing adapted to cut olf the discharge of air from the said cap, a leverifulcrumed to the said supplemental casing, and means adjustably connecting the. said tube' and the said spindle to thesaid' lever independently 'oi each other vrfor varying kthe opening of the said'valve andthe discharge of air from the said -cap in predetermined proportions to each other from zero to maximum. n

14. A'gas burner'comprising a'inain casing having an air connection and an adjustable air `cap at `its outlet end, a supplemental casing fastened tothe saidumaiu casing having a gas connection, a gas valve and a gas nozzle in alignment with each other,'a tube carrying fthe' said valve, and a spindle adapted to reciprocate Within the said tube carrying .the said nozzle, thel said-'nozzle being adapted to cut'o thel discharge of air fromthe said cap, a'lever fulcrumed to the said supplemental casing,- and means adjustably connecting'the said tube and the said spindle to the said lever 4independently of each other vfor 'varying the opening of the said valve and the discharge of air'from the said cap inipredetermined proportions toV each other from zero to maximum durin a constant travel of thesa-id Slever. K

'15.` A gas burner comprising a structure having-gas and air connections,a gas valve and a gasknozzle 'in Valignment with each other, a tube carrying the said valve, and a` spindle adapted to i reciprocate Within the said' tube carrying thesaidnozzle, an oper- 

